Chamber Collection (page 3)

Sectional view of Gay-Lussacs lead chambers and absorption towers, 1870. These were for the large-scale production of sulphuric acid also (Oil of Vitriol or H2SO4)

Lead chambers for large-scale production of sulphuric acid, 1874. Sectional view showing the process from beginning to end from the furnace (left) to the denitrating (or Glover) tower (right)

Production of sulphuric acid (Oil of Vitriol or H2S04), 1844. View of the passage between two lead chambers, Felling Chemical Works, Newcastle, England. From The Penny Magazine. (London 1844)

Interior of the Mycenaean palace-fortress at Tiryns in Greece, 13th century BC
Interior of the Mycenaean palace-fortress at Tiryns in Greece, in the gable-roofed galleries, used as a storage chamber, 13th century BC

Grave of a Zulu chief, 1888. The body is in a sitting position in a stone-lined underground chamber. From History of Mankind by Friedrich Ratzel. (Leipzig, 1888)

Camera obscura, c1840. The illustration shows how the scene outside was collected by a mirror tilted at 45 degrees (B), passed through a meniscus lens between F and C

Camera obscura, 1855. Drawing a landscape using a portable camera obscura in the form of a tent. From The Museum of Science and Art by Dionysius Lardner. (London, 1855)

Cast of a slab from the Tumulus of Petit-mont, Prehistoric
Cast of a slab from the Tumulus of Petit-mont, Arzon. It is the third support of the left in the chamber of the dolmen. The human feet shown were possibly added later

Southern Gigantija temple on Malta, 31st century BC
Southern Gigantija temple on Malta. The second chamber is on the left, and the rear chamber on the right, 31st century BC

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